Also keep in mind that "even though" and "even if" are different. "even though" implies fact, and "even if" implies contrary-to-fact.
"Even though he is 190 cm tall, he still fits comfortably in the airplane seat." (he is 190 cm tall)
"Even if he had a million dollars, I would not marry him." (he does not have a million dollars)
In both cases, you must have a word between "even" and "he". (Another possible word is "when".) I notice that a lot of English learners omit the needed word.
There is a different structure where no "if" or "though" is needed:
"Even he was able to pass the test." This implies that the test is so easy that he (presumably a not-very-competent person when it comes to exams) is also able to pass the test. The word "he" would be stressed.
Note that this is an independent sentence. "even though" and "even if" are used in dependent clauses.